Surgical instrument

Details Surgical instrument Surgical instrument

2007-11-27

2007-11-27

Dvorak, Linda C. M. (Department: 3739)

Surgery

Instruments

Forceps

C606S001000, C606S046000, C606S206000, C606S207000

Reexamination Certificate

active

10488442

ABSTRACT:
The invention relates to an instrument for surgery, in particular minimally invasive surgery. The instrument includes means for feeding back a force which is exerted on the working element of the instrument to the operating element. These means include at least a first force sensor for measuring the force which is exerted on the working element, a control unit and a first actuator. On the basis of a signal which originates from the first force sensor, the control unit controls at least the first actuator in order to control the operating element. Furthermore, the means preferably include a first position sensor for measuring a position of the working element with respect to the frame. The control unit advantageously determines an impedance which the working element is subject to as a result of the presence of a tissue or the like, on the basis of which impedance the control unit controls at least the first actuator.

REFERENCES:
patent: 5389849 (1995-02-01), Asano et al.
patent: 5609607 (1997-03-01), Hechtenberg et al.
patent: 5965880 (1999-10-01), Wolf et al.
patent: 6436107 (2002-08-01), Wang et al.
patent: 1 125 557 (2001-08-01), None
patent: WO98/51451 (1998-11-01), None
patent: WO00/51486 (2000-09-01), None

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